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首页> 外文期刊>Estuarine Coastal and Shelf Science >Hurricane Katrina induced nutrient runoff from an agricultural area to coastal waters in Biscayne Bay, Florida
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Hurricane Katrina induced nutrient runoff from an agricultural area to coastal waters in Biscayne Bay, Florida

机译：卡特里娜飓风在佛罗里达州比斯坎湾造成了从农业区到沿海水域的养分径流

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摘要

Water quality surveys conducted in Biscayne Bay, Florida, indicated enhanced nutrient input coupled with increased runoff as a result of precipitation associated with Hurricane Katrina. Nutrient concentrations before Katrina ranged from 0.06-24.2 μM (mean 3.3 μM) for nitrate and 0.01-0.18 μM (mean 0.1 uM) for soluble reactive phosphate. Five days after Katrina, nitrate concentrations ranged from 0.87-80.0 μM (mean 17.0 μM), with a bay-wide mean increase of 5.2-fold over pre-hurricane levels. Soluble reactive phosphate concentrations ranged from 0.07-0.62 μM (mean 0.2 μM), with a bay-wide mean increase of 2-fold over pre-hurricane levels. The maximum concentrations for both nitrate and soluble reactive phosphate were found at a water quality monitoring station near the mouth of Mowry Canal, which drains an agricultural area in the southern Biscayne Bay watershed near Homestead, Florida. At this station, nitrate and soluble reactive phosphate concentrations increased 7- and 10-fold, respectively. Storm-induced fertilizer runoff from this agricultural area caused a bay-wide increase in nutrient concentrations after Hurricane Katrina. Nutrient concentrations in the bay returned to pre-hurricane levels within three months after Hurricane Katrina, showing the resiliency of the Biscayne Bay ecosystem.
机译：在佛罗里达州比斯坎湾进行的水质调查表明，由于卡特里娜飓风造成的降水，营养物质输入增加，径流增加。卡特里娜飓风之前的硝酸盐营养浓度范围为0.06-24.2μM（平均3.3μM），而可溶性反应性磷酸盐为0.01-0.18μM（平均0.1 uM）。卡特里娜飓风过后五天，硝酸盐浓度范围为0.87-80.0μM（平均17.0μM），海湾范围的平均浓度比飓风前水平增加5.2倍。可溶性反应性磷酸盐浓度范围为0.07-0.62μM（平均0.2μM），与飓风前水平相比，海湾范围的平均浓度增加了2倍。在莫里运河口附近的水质监测站发现了硝酸盐和可溶性活性磷酸盐的最大浓度，该监测站排泄了佛罗里达州霍姆斯特德附近比斯坎湾南部流域的一个农业地区。在该站，硝酸盐和可溶性活性磷酸盐的浓度分别增加了7倍和10倍。卡特里娜飓风过后，暴风雨引起的该农业地区的肥料径流使全海湾的养分浓度增加。卡特里娜飓风过后的三个月内，海湾中的养分浓度恢复到飓风前的水平，显示了比斯坎湾生态系统的弹性。

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  • 来源
    《Estuarine Coastal and Shelf Science》 |2009年第2期|209-218|共10页
  • 作者

    Jia-Zhong Zhang; Christopher R. Kelble; Charles J. Fischer; Lloyd Moore;

  • 作者单位

    Ocean Chemistry Division, Atlantic Oceanographic and Meteorological Laboratory, National Oceanic and Atmospheric Administration, Miami, FL 33149, USA;

    Ocean Chemistry Division, Atlantic Oceanographic and Meteorological Laboratory, National Oceanic and Atmospheric Administration, Miami, FL 33149, USA CIMAS, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL 33149, USA;

    Ocean Chemistry Division, Atlantic Oceanographic and Meteorological Laboratory, National Oceanic and Atmospheric Administration, Miami, FL 33149, USA;

    Ocean Chemistry Division, Atlantic Oceanographic and Meteorological Laboratory, National Oceanic and Atmospheric Administration, Miami, FL 33149, USA;

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  • 正文语种 eng
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  • 关键词

    nutrient; nitrogen; phosphorus; silicon; hurricane; runoff; agriculture; fertilizer; florida; biscayne bay;

    机译：养分;氮;磷;硅;飓风;径流;农业;肥料;佛罗里达;比斯坎湾;

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